If you're trying to improve your rendering skills, you're making life hrd on yourself by trying to color that drawing. You'd develop much faster if your first ~20 paintings were copies/studies of photos/scenes that already have true values. You can't learn how to paint good values on imagination alone, you need to get experience with real values first, and over time you'll learn how they work. And then you can apply that learning to any drawing._________________Art Links Archive -- Artists and Tutorials